totalngrams: support gzipped output
diff --git a/pom.xml b/pom.xml
index 94999ca..42a6461 100644
--- a/pom.xml
+++ b/pom.xml
@@ -150,5 +150,11 @@
             <artifactId>picocli</artifactId>
             <version>4.2.0</version>
         </dependency>
+        <!-- https://mvnrepository.com/artifact/org.anarres/parallelgzip -->
+        <dependency>
+            <groupId>org.anarres</groupId>
+            <artifactId>parallelgzip</artifactId>
+            <version>1.0.3</version>
+        </dependency>
     </dependencies>
 </project>
\ No newline at end of file